CeO2 NPs based capacitive sensor for quantification of limonin in citrus limetta juice

Citrus fruit juices are beneficial to health immunity due to having antiviral, antifungal and antioxidant properties. However acceptability of its juices reduces due to the delayed bitterness caused mainly by the biomolecule limonin. Hence, continuous monitoring of limonin in juices is required to k...

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Published in:IEEE sensors journal 2023-02, p.1-1
Main Authors: Das, Satyajit, Sahu, Partha Pratim
Format: Article
Language:English
Subjects:
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Capacitance
Capacitive sensors
Electrodes
Fingers
Powders
Sensors
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Summary:Citrus fruit juices are beneficial to health immunity due to having antiviral, antifungal and antioxidant properties. However acceptability of its juices reduces due to the delayed bitterness caused mainly by the biomolecule limonin. Hence, continuous monitoring of limonin in juices is required to keep its limit within permissible level. Here, CeO 2 NPs based capacitive sensor has been introduced for the first time to quantify limonin concentration in citrus limetta juice. The CeO 2 NPs were synthesized through a low-cost and eco-friendly method using Dillenia Indica aqueous extract. The capacitive sensor was designed and simulated using COMSOL multiphysics and fabricated by drop coating of CeO 2 NPs on IDE structure patterned on paper substrate. The sensor exhibits an excellent sensitivity of ~ 9.62 ±0.095 μF/ ppm and a fast response time of ~ 13s. The sensor's performance was validated using HPLC analysis. The developed sensor assures easy, on-site, eco-friendly and rapid monitoring of limonin level in citrus juices.
ISSN:1530-437X
DOI:10.1109/JSEN.2023.3241384